【摘要】：著陸器登月過(guò)程中發(fā)動(dòng)機(jī)羽流侵蝕，揚(yáng)起的月壤會(huì)造成很多不利因素。這些不利因素包括：阻礙宇航員的視線，損害機(jī)械裝置，破壞密封裝置以及粘附在熱防護(hù)系統(tǒng)的表面。為了對(duì)這些影響有一個(gè)量化的預(yù)測(cè)，研究羽流與月壤相互作用非常重要。 發(fā)動(dòng)機(jī)羽流在撞擊到月表時(shí)，會(huì)在月表形成壓力和剪力。隨著發(fā)動(dòng)機(jī)噴口距月表距離不斷減少，羽流在月表引起的壓力和剪力也會(huì)逐漸的增大，羽流侵蝕月壤的現(xiàn)象也愈發(fā)明顯。論文根據(jù)Mohr-Coulomb土體破壞準(zhǔn)則，，建立力學(xué)平衡方程,計(jì)算月壤被羽流侵蝕的質(zhì)量，得到月球表面形成新月坑的位置和尺寸。進(jìn)一步，采用月壤顆粒受力運(yùn)動(dòng)方程，得到月壤分布的密度、月壤的噴射角度等。 論文進(jìn)一步討論了不同參數(shù)對(duì)羽流侵蝕月壤計(jì)算結(jié)果的影響。同時(shí)，根據(jù)阿波羅11著陸月球的實(shí)際情況，與本文計(jì)算結(jié)果進(jìn)行對(duì)比，計(jì)算結(jié)果與阿波羅11的著陸實(shí)際情況基本吻合。
[Abstract]:The plume erosion of the engine during the landing of the lander will cause a lot of unfavorable factors. These include obstructing the sight of astronauts, damaging machinery, destroying seals, and sticking to the surfaces of thermal protection systems. In order to predict these effects quantitatively, it is very important to study the interaction between plume and lunar soil. When an engine plume hits the surface, it forms pressure and shearing on the surface. With the decrease of the distance from the engine nozzle to the monthly surface, the pressure and shear caused by plume on the monthly surface will increase gradually, and the phenomenon of plume eroding the lunar soil becomes more and more obvious. According to the Mohr-Coulomb soil failure criterion, the mechanical equilibrium equation is established, and the mass of lunar soil eroded by plume is calculated. The position and size of the crescent crater on the lunar surface are obtained. Furthermore, the distribution density of lunar soil and the jet angle of lunar soil were obtained by using the equation of motion of lunar soil particles. The effect of different parameters on the calculated results of plume erosion is discussed. At the same time, according to the actual situation of Apollo 11 landing on the moon, the calculated results are compared with those of this paper. The calculated results are in good agreement with the actual conditions of Apollo 11 landing.
【學(xué)位授予單位】：天津大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2012
【分類號(hào)】：P184;V476.3

【參考文獻(xiàn)】

相關(guān)期刊論文 前10條

1 張建華;賀碧蛟;蔡國(guó)飆;;軸對(duì)稱羽流流場(chǎng)數(shù)值模擬和實(shí)驗(yàn)驗(yàn)證[J];北京航空航天大學(xué)學(xué)報(bào);2011年05期

2 張永紅;郭健;張繼賢;寧曉剛;;月球探測(cè)50年[J];測(cè)繪通報(bào);2007年12期

3 孫智信;盧紹華;林聰榕;;人類探月與嫦娥工程[J];國(guó)防科技;2007年12期

4 沈祖煒;;阿波羅登月艙最終下降及著陸綜述[J];航天返回與遙感;2008年01期

5 張濤;邵興國(guó);向艷超;;月塵對(duì)熱控系統(tǒng)的退化影響[J];航天器工程;2010年05期

6 陸鑫;黃勇;李雯;趙tb;王浚;;著陸作用下月塵激揚(yáng)的三維離散元分析[J];航天器工程;2011年01期

7 葉培建;肖福根;;月球探測(cè)工程中的月球環(huán)境問(wèn)題[J];航天器環(huán)境工程;2006年01期

8 樊世超;賈陽(yáng);向樹(shù)紅;劉闖;;月面地形地貌環(huán)境模擬初步研究[J];航天器環(huán)境工程;2007年01期

9 李潔;任兵;陳偉芳;;稀薄流過(guò)渡區(qū)氣固兩相噴流的建模與數(shù)值模擬[J];空氣動(dòng)力學(xué)學(xué)報(bào);2005年04期

10 張建華;賀碧蛟;蔡國(guó)飆;陳愛(ài)國(guó);楊彥廣;李震乾;;衛(wèi)星姿控發(fā)動(dòng)機(jī)噴管羽流撞擊效應(yīng)試驗(yàn)[J];空氣動(dòng)力學(xué)學(xué)報(bào);2007年02期

相關(guān)博士學(xué)位論文 前1條

1 劉興隆;登月飛行器軟著陸的制導(dǎo)與控制[D];哈爾濱工業(yè)大學(xué);2008年

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